CVE-2026-59838

Published Jul 15, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiSIEM

unaffected

Version	Status	Constraints
`7.4.0`	affected	—
`7.3.0`	affected	≤ 7.3.4
`7.2.0`	affected	≤ 7.2.6
`7.1.0`	affected	≤ 7.1.9
`7.0.0`	affected	≤ 7.0.4
`6.7.0`	affected	≤ 6.7.10
`6.6.0`	affected	≤ 6.6.5
`6.5.0`	affected	≤ 6.5.3
`6.4.0`	affected	≤ 6.4.4
`6.3.0`	affected	≤ 6.3.3
`6.2.0`	affected	≤ 6.2.1

Configuration 1 [-]

OR	cpe:2.3:a:fortinet:fortisiem::::::::
	cpe:2.3:a:fortinet:fortisiem::::::::
	cpe:2.3:a:fortinet:fortisiem:7.4.0:::::::*

No data.

Vendor Product Versions

Fortinet

Fortisiem

Version	Status	Scheme	Platform
`7.4.0`	affected	semver	—
`[7.3.0,7.3.4]`	affected	semver	—
`[7.2.0,7.2.6]`	affected	semver	—
`[7.1.0,7.1.9]`	affected	semver	—
`[7.0.0,7.0.4]`	affected	semver	—
`[6.7.0,6.7.10]`	affected	semver	—
`[6.6.0,6.6.5]`	affected	semver	—
`[6.5.0,6.5.3]`	affected	semver	—
`[6.4.0,6.4.4]`	affected	semver	—
`[6.3.0,6.3.3]`	affected	semver	—
`[6.2.0,6.2.1]`	affected	semver	—

Remediation

Vendor Solution

Upgrade to FortiSIEM version 7.5.0 or above Upgrade to FortiSIEM version 7.4.1 or above Upgrade to FortiSIEM version 7.3.5 or above Upgrade to FortiSIEM version 7.2.7 or above

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.242% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-149

History

Jul 31, 2026 4:00 AM Title updated View changes

Type	Values Removed	Values Added
Title	Basic XSS Vulnerability in FortiSIEM Web Interface

Jul 29, 2026 3:15 AM Title updated View changes

Type	Values Removed	Values Added
Title		Basic XSS Vulnerability in FortiSIEM Web Interface

Jul 25, 2026 7:45 AM Title updated View changes

Type	Values Removed	Values Added
Title	Basic XSS via Improper Neutralization of Script‑Related Tags in FortiSIEM

Jul 22, 2026 9:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Basic XSS via Improper Neutralization of Script‑Related Tags in FortiSIEM

Jul 17, 2026 5:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jul 15, 2026 2:15 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
First Time appeared		Fortinet Fortinet fortisiem
Weaknesses		CWE-80
CPEs		cpe:2.3:a:fortinet:fortisiem:6.2.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.2.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.3.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.3.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.3.2:::::::* cpe:2.3:a:fortinet:fortisiem:6.3.3:::::::* cpe:2.3:a:fortinet:fortisiem:6.4.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.4.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.4.2:::::::* cpe:2.3:a:fortinet:fortisiem:6.4.3:::::::* cpe:2.3:a:fortinet:fortisiem:6.4.4:::::::* cpe:2.3:a:fortinet:fortisiem:6.5.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.5.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.5.2:::::::* cpe:2.3:a:fortinet:fortisiem:6.5.3:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.2:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.3:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.4:::::::* cpe:2.3:a:fortinet:fortisiem:6.6.5:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.0:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.10:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.1:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.2:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.3:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.4:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.5:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.6:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.7:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.8:::::::* cpe:2.3:a:fortinet:fortisiem:6.7.9:::::::* cpe:2.3:a:fortinet:fortisiem:7.0.0:::::::* cpe:2.3:a:fortinet:fortisiem:7.0.1:::::::* cpe:2.3:a:fortinet:fortisiem:7.0.2:::::::* cpe:2.3:a:fortinet:fortisiem:7.0.3:::::::* cpe:2.3:a:fortinet:fortisiem:7.0.4:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.0:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.1:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.2:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.3:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.4:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.5:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.6:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.7:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.8:::::::* cpe:2.3:a:fortinet:fortisiem:7.1.9:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.0:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.1:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.2:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.3:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.4:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.5:::::::* cpe:2.3:a:fortinet:fortisiem:7.2.6:::::::* cpe:2.3:a:fortinet:fortisiem:7.3.0:::::::* cpe:2.3:a:fortinet:fortisiem:7.3.1:::::::* cpe:2.3:a:fortinet:fortisiem:7.3.2:::::::* cpe:2.3:a:fortinet:fortisiem:7.3.3:::::::* cpe:2.3:a:fortinet:fortisiem:7.3.4:::::::* cpe:2.3:a:fortinet:fortisiem:7.4.0:::::::*
Vendors & Products		Fortinet Fortinet fortisiem
References		https://fortiguard.fortinet.com/psirt/FG-IR-26-149
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C'}`